Best of 2025

The blog posts Hacker News loved most in 2025. 550 posts.

Tools & Productivity
452

Tarsnap is cozy

I have been aware of tarsnap for a long time, but only recently did I actually get around to using it for anything, as a result of my big personal digital resiliency audit for 2025. For those of you not in the know, tarsnap is “online backups for the truly paranoid”, and tarsnap the command-line program is the…

466

Absolute Zero Reasoner

Current reasoning models trained with Reinforcement Learning with Verifiable Rewards (RLVR) often rely on manually curated datasets, raising scalability concerns and potentially limiting future AI growth beyond human-defined tasks. To address this, we propose the Absolute Zero paradigm, where a single model…

469

Robotics and ROS 2 Essentials

Learn Robotics and ROS 2 Have you been looking for a good place to start your robotics and ROS 2 learning journey? Look no further! We are proud to announce that together with the University of Eastern Finland, we have open-sourced the robotics part from our “Robotics & XR” master’s-level course. You can find the […]

473

Delete tests

We’ve had decades of thought leadership around testing, especially coming from holistic development philosophies like Agile, TDD, and BDD. After all that time and several supposedly superseding movements, the developers I talk to seem to have developed a folk wisdom around tests. That consensus seems to boil down to…